[Product name]: Resveratrol
[Latin name]: Polygonum cuspidatum
[Botanical Source]: The dried roots and stems are taken from plants roots.The main products are in shaanxi, gansu, east China, central China, south China, sichuan, shandong, yunnan guizhou and other places
[Quality standard]:
1. Active Ingredient: （1）Resveratrol 50%-98% （2）emodin 98%
2. Plant part used: Root and Stem
3. Appearance: Brown-green or Light white powder
